VDB-102879 · CVE-2017-9841 · BID 101798

PHPUnit up to 4.8.27/5.6.2 HTTP POST Util/PHP/eval-stdin.php code injection

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

A vulnerability classified as critical has been found in PHPUnit up to 4.8.27/5.6.2. This affects an unknown function of the file Util/PHP/eval-stdin.php of the component HTTP POST Handler. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Util/PHP/eval-stdin.php in PHPUnit before 4.8.28 and 5.x before 5.6.3 allows remote attackers to execute arbitrary PHP code via HTTP POST data beginning with a "<?php " substring, as demonstrated by an attack on a site with an exposed /vendor folder, i.e., external access to the /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php URI.

The bug was discovered 06/27/2017. The weakness was shared 06/27/2017 (Website). It is possible to read the advisory at phpunit.vulnbusters.com. This vulnerability is uniquely identified as CVE-2017-9841 since 06/24/2017. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

By approaching the search of inurl:Util/PHP/eval-stdin.php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 104693 (FreeBSD : mediawiki -- multiple vulnerabilities (298829e2-ccce-11e7-92e4-000c29649f92)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277023 (Fedora Security Update for mediawiki (FEDORA-2017-59251d350d)). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 02/15/2022 with a due date of 08/15/2022:

Apply updates per vendor instructions.

Upgrading to version 4.8.28 or 5.6.3 eliminates this vulnerability. A possible mitigation has been published 6 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104693). The entries 109444, 109445, 109446 and 109447 are related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
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NVD Base Score: 9.8
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CVSSv2info

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Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
ATT&CK: T1059

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
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Nessus ID: 104693
Nessus Name: FreeBSD : mediawiki -- multiple vulnerabilities (298829e2-ccce-11e7-92e4-000c29649f92)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 56245
OpenVAS Name: PHPUnit CVE-2017-9841 Remote Code Execution Vulnerability
OpenVAS File: 🔍
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Qualys ID: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
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Upgrade: PHPUnit 4.8.28/5.6.3
Patch: github.com

Timelineinfo

06/24/2017 🔍
06/27/2017 +3 days 🔍
06/27/2017 +0 days 🔍
06/27/2017 +0 days 🔍
06/27/2017 +0 days 🔍
06/28/2017 +1 days 🔍
11/19/2017 +144 days 🔍
11/20/2017 +1 days 🔍
12/09/2022 +1845 days 🔍

Sourcesinfo

Advisory: 284a69fb88a2d0845d23f42974a583d8f59bf5a5
Researcher: David Mudrák
Status: Not defined

CVE: CVE-2017-9841 (🔍)
SecurityTracker: 1039812
SecurityFocus: 101798 - PHPUnit CVE-2017-9841 Arbitrary Code Execution Vulnerability

See also: 🔍

Entryinfo

Created: 06/28/2017 07:57
Updated: 12/09/2022 10:50
Changes: 06/28/2017 07:57 (75), 12/29/2019 20:21 (4), 12/29/2020 20:28 (2), 12/29/2020 20:31 (1), 12/09/2022 10:50 (4)
Complete: 🔍

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